Application number: US450710D. Filing date: Legal status: Expired - Lifetime.Assess Your Inventions Patentability. First, you need to assess whether or not your answer is patentable. To apply for a patent, you must file an application and pay required fees. Design patents, on the other hand, are slightly more expensive. The vertical form fill sealing (VFFS) machine is a type of automated assemblyline product packaging system. Liquor Store Paper Bags. This solicitation may be subject to the County's Wage Requirements law for service contracts. The Prince George's County Council passed legislation prohibiting the distribution of single-use carryout bags to consumers at retail establishments.